Qihoo 360 was founded by Zhou in September 2005. It is a leading Internet service company in the domestic security field. With Qihoo, 360 security guards, 360 antivirus, 360 browser (security and speed), 360 mobile assistant, 360 search and other services. It has successively obtained joint investment of tens of millions of dollars from venture capitalists such as CDH Venture Capital, Sequoia Capital, Highland Capital Partner, Red Dot Investment, Matrix and IDG. 2011On March 30th, Qihoo 360 was officially listed on the NYSE with the stock code "Hu Qi".